The first, is to download a custom UI (user interface) that has a campaign feature listed, such as the one above, (available here ). How Do I Play the Single Player Campaign Maps in Halo CE Halo Custom Edition can run a variety of custom campaign maps, and there are two ways to do this. Please review the article listed below for detailed instructions on how to play these single player levels.
Custom Map Team's (CMT) singleplayer maps are modifications and enhancements to the original Halo single player campaign.
I teach you how to play campaign/single player maps on Halo Custom Edition.Universal UI 1.1: UI (For Refi. Home Halo custom edition Maps campaign How To Play Campaign on Halo Custom Edition - YouTub
